Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 103,807	$ 98,721
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	24,021	22,573
Japan customs expense	32,754
Foreign currency (gains)/losses	4,388	3,350
Stock-based compensation	11,510	7,739
Deferred taxes	(11,553)	(1,084)
Changes in operating assets and liabilities:
Accounts receivable	(10,780)	(8,492)
Inventories, net	8,195	(8,739)
Prepaid expenses and other	(5,667)	(4,001)
Other assets	(17,064)	(3,675)
Accounts payable	5,245	3,482
Accrued expenses	(25,885)	16,664
Other liabilities	8,402	11,775
Net cash provided by operating activities	127,373	138,313
Cash flows from investing activities:
Purchases of property and equipment	(27,985)	(28,692)
Net cash used in investing activities	(27,985)	(28,692)
Cash flows from financing activities:
Exercise of employee stock options	25,924	14,099
Payment of debt	(26,501)	(20,459)
Payment of cash dividends	(26,671)	(23,412)
Income tax benefit of options exercised	10,298	5,524
Payment of related party debt	(16,995)
Repurchases of shares of common stock	(51,045)	(49,960)
Net cash used in financing activities	84,990	74,208
Effect of exchange rate changes on cash	(2,701)	4,169
Cash and cash equivalents, beginning of period	230,337	158,045
Cash and cash equivalents, end of period	$ 242,034	$ 197,627